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Retrofitting of rectangular columns with deficient lap splices

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dc.contributor.authorElGawady, M.
dc.contributor.authorEndeshaw, M.
dc.contributor.authorMcLean, D.
dc.contributor.authorSack, R.
dc.date.issued2010
dc.description.abstractThe cyclic behavior of eight 0.4-scale reinforced concrete column specimens is investigated. The columns incorporated deficient design details to simulate bridge columns built in Washington State prior to 1971. Two columns were tested as reference specimens, five were tested after retrofitting using carbon fiber-reinforced polymer (CFRP), and one was tested after retrofitting using a conventional steel jacket. All the specimens were tested under constant gravity load and incrementally increasing lateral loading cycles. The specimens had rectangular cross sections with aspect ratios of 1.5 and 2.0. The parameters investigated included the amount of CFRP reinforcement, different retrofitting jacket configurations, and different retrofitting materials. For the as-built specimens, two modes of failure occurred, namely low cyclic fatigue of longitudinal reinforcement and lap splice failure. For the retrofitted specimens, no lap splice failure was observed. All the retrofitted specimens failed due to low cyclic fatigue failure of the longitudinal bars. The retrofitting measures improved the displacement ductility, energy dissipation, and equivalent viscous damping. In addition, increasing the amount of CFRP reinforcement improved the performance of the test specimens.Introduction
dc.identifier.citationJournal of Composites for Construction, 2010; 14(1):22-35
dc.identifier.doi10.1061/(ASCE)CC.1943-5614.0000047
dc.identifier.issn1090-0268
dc.identifier.issn1943-5614
dc.identifier.urihttps://hdl.handle.net/1959.8/155817
dc.language.isoen
dc.publisherAmerican Society of Civil Engineers
dc.relation.fundingFederal Highway Administration FHWA DTFH61-03-C-00104
dc.rightsCopyright 2010 ASCE
dc.source.urihttps://doi.org/10.1061/(ASCE)CC.1943-5614.0000047
dc.subjectcomposite materials
dc.subjectconcrete columns
dc.subjectcyclic loads
dc.subjectretrofitting
dc.subjectseismic response
dc.titleRetrofitting of rectangular columns with deficient lap splices
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9915910220801831

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